Conbextra EP10
constructive solutions
High strength epoxy grout and injection
resin
Uses
Specification
Provides a free flowing resin, for use where physical
properties and chemical resistance of the hardened grout are
of utmost importance. It can be used for grouting applications
as well as injection of static and structural cracks. It is
suitable for a wide range of heavy duty applications including:
Where shown on the contract documents, the epoxy resin
shall be Conbextra EP10 supplied by Fosroc. It shall provide
good general chemical resistance, and a 7 day compressive
2
strength of at least 93 N/mm .
Properties
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Provides a free flowing resin grout
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Heavy industrial applications in steelworks, refineries
chemical plants and electroplating works

Rail track applications, to support heavy cranes, or on
transporter rails
o
Density:
Tensile strength:
60 minutes at 20 C
o
15 minutes at 40 C
3
Approx. 1060 kg/m
2
30 N/mm at 7 days
Flexural strength:
55 N/mm at 7 days
Compressive strength:
55 N/mm at 1 day
2
68 N/mm at 3 days
2
93 N/mm at 7 days
Advantages
Modulus of elasticity:
(ASTM C580 7 days)
16 KN/mm

Viscosity:
250 Cps at 20 C
o
100 Cps at 35 C
Static/structural cracks injection
Pot life:
Base plate grouting in dynamic load situations such as
turbines and other reciprocating machinery
2
2
2
o
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Excellent durability - high compressive, flexural and
tensile strengths ensure a long working life
Cost effective - high early strength gain promotes
minimum downtime and early commissioning of plant
User friendly - simple, full pack mixing to ensure that
the performance characteristics are achieved
Versatile - suitable for a wide range of loading
situations including repetitive dynamic loads
Excellent in service performance - non-shrink
capability ensure full surface to surface contact
Non-shrink - ensures complete surfaces contact and
bond, also ensures that it will resist hydrostatic pressure
and block penetration of deleterious substances
Instructions for use
Under-plate grouting applications
Preparation
The unrestrained surface area of the grout must be kept to a
minimum.
Generally, the gap between the perimeter
formwork and the plate edge should not exceed 75 mm on
the pouring side and 25 mm on the opposite side. Formwork
on the flank sides should be kept tight to the plate edge. Air
pressure relief holes should be provided to allow venting of
any isolated high spots.
Description
Formwork
Conbextra EP10 is a solvent free epoxy low viscosity resin
that is designed to be used for grouting applications of gap
widths from 0.25mm up to 10mm, as well as, for injection
applications of static/structural cracks in concrete and
masonry of crack widths between 0.05mm and 3mm.
The formwork should be constructed to be leak proof as
Conbextra EP10 is a free flow grout. This can be achieved
by using foam rubber strip or mastic sealant beneath the
constructed formwork and between joints.
Due to its low viscosity, Conbextra EP10 penetrates deeply
into cracks and cavities to form a permanent seal with high
strength properties.
It is an all liquid system consisting of base and hardener; the
components are supplied in the correct mix proportions
designed for whole pack mixing on site.
For free flow grout conditions, it is essential to provide a
hydrostatic head of grout. To achieve this a feeding hopper
should be used - please consult your local Fosroc office for
more details.
Foundation surface
This must be free from oil, grease, or any loosely adherent
material. If the concrete surface is defective or has laitance,
it must be cut back to a sound base. Bolt holes or fixing
pockets must be blown clean of any dirt or debris.
Page 1
Conbextra EP10
Base plate
Resin Application
If delay is likely before placing steel base plates, it is
recommended that the underside and edge are coated with
Nitoprime 28 to prevent rust formation and ensure bonding
with the Conbextra EP10 grout. All metal surfaces should be
cleaned to a bright finish in accordance with Swedish
Standard SA 2½ or equal. Nitoprime 28 can be applied
directly onto newly cleaned steel surfaces even if they are
damp.
Thoroughly mix the entire hardener and base resin contents
until the liquid becomes clear.
Conbextra EP10 should be used with standard injection
equipment having closed containers. The injection pressure
should be at least 0.4N/mm2 (4 bar).
Only mix sufficient resin that can be used within the pot life of
the material.
Mixing
The entire contents of the hardener can should be poured
into the base container and mixed for 2 - 3 minutes or until
uniform colour is achieved. Once mixed, the material must
be used within the specified pot life (see under Properties).
After this time, unused material will have stiffened and should
be discarded.
Following completion of the injection works the injection
system shall be allowed to cure for 24 hours and shall be left
undisturbed for this time.
Final Repair
Note: Immediately prior to placement, all surfaces must be
dry.
Remove the packers and make good any holes or voids with
Nitomortar TC2000 and allow to cure. The Nitomortar
TC2000 can be ground off or softened with a blow lamp and
peeled off. Do not allow to burn.
Placing
Application in Horizontal cracks
Ensure that the grout can be placed within its pot life.
Continuous grout flow is essential. Sufficient grout must be
available prior to starting and the time taken to pour a batch
must be regulated to the time taken to prepare the next one.
Pouring should be form one side of the void to eliminate air
entrapment. The hydrostatic head must be maintained at all
times so that a continuous grout front is achieved.
In case of horizontal cracks in excess of 2mm Conbextra
EP10 can be applied through gravity flow, without the use of
injection packers. However such appliction need to be
verified for suitability through a site trial.
Cleaning
Crack injection applications
All tolls and equipment should be cleaned immediately after
use with Fosroc Solvent 102*.
Fixing Injection Packers
Hot weather working
The injection packers shall be inserted into pre-drilled holes
at intervals along the length of each crack. The distance
between each packer will depend upon the width and depth
of the crack.
Whilst the performance of Conbextra EP10 at elevated
temperatures is assured, application under such conditions
can sometimes be difficult. It is therefore suggested that, for
o
temperatures above 35 C, the following guidelines are used:
Spacing shall be close enough to ensure that the resin will
penetrate along the crack to the next point of injection. The
surface of the cracks between the packers shall be sealed
with a band of Nitomortar TC2000, 30 to 40mm wide and 2 to
3 mm thick. Both sides of any cracks which go all the way
through a wall or slab shall be sealed in this way. In the case
of a wall or slab cracked all the way through, packers shall be
located on both sides with those at the back placed at
midway points between those at the front.
The Nitomortar TC2000 shall be allowed to cure for 8 hours
at 35°C. At low ambient temperatures (5°C to 12°C) the
curing time will be extended and the applicator shall ensure
that the surface sealant has adequately cured prior to
continuing. One end of the injection hose shall be attached to
the lowest packer on vertical cracks or to either end of the
horizontal cracks.
constructive solutions
(i) Store unmixed materials in a cool (preferably temperature
controlled) environment, avoiding exposure to direct
sunlight.
(ii) Keep mixing and placing equipment cool, arranging
shade protection if necessary. It is especially important
to keep cool those surfaces of the equipment which will
come into direct contact with the material itself.
(iii) Try to eliminate application in the middle of the day, and
certainly avoid application in direct sunlight.
(iv) Ensure that there are sufficient operatives available to
complete application within the material’s pot life.
Page 2
Conbextra EP10
Limitations
Precautions
Grouts should not be placed in any unrestrained situation, i.e.
base plate plinths, etc. Failure to comply may lead to crack
development in the grout.
Health and Safety
Estimating
Supply
Conbextra EP10:
Nitoprime 28:
Fosroc Solvent 102:
1.5 litre packs
1 and 5 kg packs
4 litres packs
Coverage
Nitoprime 28:
Some people are sensitive to epoxy resin so gloves and a
barrier cream such as Kerodex 71, Rozalex 9, Debba-Wet
Work or similar should be used when handling these
products. If contact with the resin occurs, it must be removed
before it hardens with a resin removing cream such as
Kerocleanse 22 or Rozalex 42. Follow by washing with soap
and water. Do not use Solvent. The use of goggles is
recommended but should accidental eye contamination
occur, wash thoroughly with plenty of clean water and seek
medical treatment immediately.
Fire
2
6 to 8 m per litre
Nitoprime 28 and Fosroc Solvent 102 are flammable
Storage
Flash points
o
When stored in warehouse conditions below 35 C, Conbextra
EP10 will have a shelf life of 12 months.
o
Nitoprime 28:
Fosroc Solvent 102:
27 C
o
33 C
*Denotes the trademark of Fosroc International Limited.
Important note:
Fosroc products are guaranteed against defective materials and manufacture and are sold subject to its standard Conditions
for the Supply of Goods and Services, copies of which may be obtained on request. Whilst Fosroc endeavours to ensure that
any advice, recommendation, specification of information it may give is accurate and correct, it cannot, because it has no direct
or continuous control over where or how its products are applied, accept any liability either directly or indirectly arising from the
use of its products, whether or not in accordance with any advice, specification, recommendation of information given by it.
Fosam Company Limited
Head Office
Post Box 11081
Jeddah - 21453
Saudi Arabia
www.fosroc.com
Telephone: +966 12 637 5345
Fax: +966 12 637 5891
email: fosam@fosroc.com
Regional Offices
Jeddah Sales Office
Jeddah Showroom
Riyadh
Dammam
Khamis Mushayt
Tel: (012) 608 0999
Tel: (012) 665 0187
Tel: (011) 482 9303
Tel: (013) 864 0787
Tel: (017) 250 0469
Fax: (012) 638 0693
Fax: (012) 667 4844
Fax: (011) 482 7562
Fax: (013) 864 0758
Fax: (017) 250 0469
Yanbu
Makkah
Medinah
Jubail
CSD
Tel: (014) 322 4280
Tel: (012) 542 0869
Tel: (014) 855 0091
Tel: (013) 362 3904
Tel: (012) 608 0999
Fax: (014) 391 2980
Fax: (012) 542 0869
Fax: (014) 855 0047
Fax: (013) 362 3875
Fax: (012) 638 0693
Registered Office: Industrial Area, Phase 4, Road No. 101 Street No. 82
Page 3
FO SA/CONBEXTRA EP10/0204/18